FRSS - group of symptoms characteristic of the disorders.
In absence of organic disease, Schneider considered them to be dias of acute SCPH.
Specificity: FRSS may occur in other functional psychoses e.g. 20% in psychotic depression and 40% in acute mania
Sensitivity: 20% of SCPH never showed FRSS
Should only be regarded as positive if definitely present. NO predictive or prognostic value